From: Jack (n2hqc_at_earthlink.net)
Date: 2004-07-12 13:41:52
On Sun, 11 Jul 2004 23:49:36 +0300, you wrote:
>On Sun, Jul 11, 2004 at 01:40:31AM -0400, Jack wrote:
>> >An original JiffyDOS package normally has both the original CBM DOS and
>> >JiffyDOS switchable for compatability reasons,...
>>
>> Then this means that the drive he sold me has a hacked/bootleg/pirate
>> JiffyDOS chip. Is this assumption correct?
>
>Not necessarily. The 1541 clone Oceanic OC-118N contains a 23128 ROM (not
>sure if it's PROM or mask-programmed ROM) with the CMD logo stamped on it.
>Some of the data or address lines are permuted, presumably because earlier
>versions of the drive had an unauthorized copy of CBM DOS.
The drive in question is a Commodore 1541-II, not a 1541 clone. It
contains a 27128 UV erasable EPROM with a label that says:
JiffyDOS v6.01 1989
1541-II
In any case, I have anther JD equipped 1541-II coming in soon. It does
have a switch and I'll compare both JD chips. The only reason I'm
buying used Jiffydos drives from other sources is because there are so
many reports Maurice is not delivering.
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